P2307

DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptors
DTC P0351
- Ignition Coil 1 Control Circuit

DTC P0352
- Ignition Coil 2 Control Circuit

DTC P0353
- Ignition Coil 3 Control Circuit

DTC P0354
- Ignition Coil 4 Control Circuit

DTC P0355
- Ignition Coil 5 Control Circuit

DTC P0356
- Ignition Coil 6 Control Circuit

DTC P2300
- Ignition Coil 1 Control Circuit Low Voltage

DTC P2301
- Ignition Coil 1 Control Circuit High Voltage

DTC P2303
- Ignition Coil 2 Control Circuit Low Voltage

DTC P2304
- Ignition Coil 2 Control Circuit High Voltage

DTC P2306
- Ignition Coil 3 Control Circuit Low Voltage

DTC P2307
- Ignition Coil 3 Control Circuit High Voltage

DTC P2309
- Ignition Coil 4 Control Circuit Low Voltage

DTC P2310
- Ignition Coil 4 Control Circuit High Voltage

DTC P2312
- Ignition Coil 5 Control Circuit Low Voltage

DTC P2313
- Ignition Coil 5 Control Circuit High Voltage

DTC P2315
- Ignition Coil 6 Control Circuit Low Voltage

DTC P2316
- Ignition Coil 6 Control Circuit High Voltage

Diagnostic Fault Information





Circuit/System Description

The ignition system on this engine uses individual ignition coils and ignition control (IC) circuits for each cylinder. Ignition voltage is supplied to each bank of ignition coils. The engine control module (ECM) controls the ignition system operation. The ECM controls each coil using the IC circuits. The ECM commands the IC circuit low when a spark event is requested. The sequencing and timing are ECM controlled.

Conditions for Running the DTC

* The engine is operating.
* The ignition voltage is between 9-18 volts.
* The engine speed is less than 5,000 RPM.
* The DTCs run continuously once per crankshaft revolution after the above conditions are met for 20 crankshaft revolutions.

Conditions for Setting the DTC

P0351-P0356

The ECM detects the ignition control circuit is open for greater than 5 seconds.

P2300, P2303, P2306, P2309, P2312, or P2315

The ECM detects the ignition control circuit is shorted to ground for greater than 5 seconds.

P2301, P2304, P2307, P2310, P2313, or P2316

The ECM detects the ignition control circuit is shorted to voltage for greater than 4 seconds.

Action Taken When the DTC Sets

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316 are Type B DTCs.

Diagnostic Aids

* Inspect the ignition coils for aftermarket devices. An aftermarket device connected to the ignition coil circuits may cause this DTC to set.
* If the condition is intermittent move the related harnesses and connectors, with the engine operating, while monitoring the appropriate scan tool Misfire Current Cylinder parameter. This may help isolate the condition.

Reference Information
Schematic Reference

Engine Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Electronic Ignition System Description (Electronic Ignition System Description)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Note: The ignition coils for each bank are fused separately. If a fuse opens or the ignition voltage circuit opens between the fuse and the splice, all the ignition coils for one bank of the engine would be inoperative. If the ground circuit opens at the engine block, the ignition coils would be inoperative for one bank of the engine.

1. Engine running, observe the following scan tool control circuit status parameters for the appropriate cylinder:

* IC Ckt Short Gnd Test Status
* IC Ckt Open Test Status
* IC Ckt Short Volts Test Status
Each parameter should display OK or Not Run.

2. Operate the engine for 30 seconds. Observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 should not set.
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, open the hood to disable the Auto-Stop function.
2. Ignition ON, verify the scan tool hood position parameter displays Open.

• If the hood position does not display Open, refer to DTC P254F (P254F).

3. Ignition OFF, disconnect the harness connector at the appropriate ignition coil.
4. Test for less than 5 ohm between each of the ground circuits listed below and ground.

* Ignition coil ground circuit terminal 3
* Ignition coil ground circuit terminal 4

• If greater than the specified range, test the circuit for an open/high resistance.

5. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 2 and ground.

• If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as necessary.

6. Ignition ON, test for 200-400 mV between the IC circuit terminal 1 and ground.

• If less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit/connections test normal, replace the ECM.
• If greater than the specified range, test the circuit for a short to voltage. If the circuit/connection tests normal, replace the ECM.

7. If all circuits/connections test normal, replace the ignition coil.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Ignition Coil Replacement - Bank 1 (Service and Repair)
* Ignition Coil Replacement - Bank 2 (Service and Repair)
* Control Module References (Programming and Relearning) for engine control module replacement, setup, and programming